I went to the In Event Viewer of remote server which I want to backup and found 2 messages:

1/

A VSS writer has rejected an event with error 0x800423f4, The writer experienced a non-transient error. If the backup process is retried,
the error is likely to reoccur.
. Changes that the writer made to the writer components while handling the event will not be available to the requester. Check the event log for related events from the application hosting the VSS writer.

Volume Shadow Copy Error: An error 0x00000000c000014d was encountered while Registry Writer was preparing the registry for a shadow copy. Check the Application and System event logs for any related errors.